First, uninstall the anyconnect client and make sure you have exited 360 Security Guard or other firewalls; restart the computer; finally, go to the official website and reinstall the latest version of anyconect client.

If you encounter ”unverifiable person” during installation or startup of the client, you can open macos ”Settings” - ”Privacy and Security” - scroll down to find the bottom prompt, and click ”Allow” or ”Open Anyway” .

First, uninstall the net client (please refer to ”How to uninstall the net anyconnect client on macos” below), and make sure you have exited 360 Security Guard or other firewalls; go to the official website and reinstall the anyconect client that complies with the macos version.

Please make the following settings in anyconnect settings (please refer to the figure ”macos settings”):

a. Please check ”Minimize cisco sece client after establishing VPN connection” and ”Disable captive portal detection”
b. Uncheck ”When starting cisco sece client” and ”Allow local (lan) access when using VPN (if configured)” and ”Block untrusted connections”

Please send the following information to the email address (sales@vps000.org):
①Username, registered email
②Screenshot of problem
③Client model and version
④Connection address or selected line name
⑤Version number of the client and screenshots of the settings
⑥Where are you using this client (specifically the province or city)
⑦The name of your network provider
After that, just wait for your reply.

Please take the first step: environment.
Open the terminal and execute the command: pkgutil --pkgs|grep com.
Under normal circumstances, you will see the following results: (If there are no results, it will not be within the scope of this solution)

com.cisco.pkg.anyconnect.vpn
com.cisco.pkg.anyconnect.websecurity
com.cisco.pkg.anyconnect.nvm
com.cisco.pkg.anyconnect.fireamp
com.cisco.pkg.anyconnect.dart
com.cisco.pkg.anyconnect.iseposture
com.cisco.pkg.anyconnect.posture

Step 2: Clean up the environment
Execute the following commands, the order does not matter:

sudo pkgutil --forget com.cisco.pkg.anyconnect.vpn
sudo pkgutil --forget com.cisco.pkg.anyconnect.websecurity
sudo pkgutil --forget com.cisco.pkg.anyconnect.nvm
sudo pkgutil --forget com.cisco.pkg.anyconnect.fireamp
sudo pkgutil --forget com.cisco.pkg.anyconnect.dart
sudo pkgutil --forget com.cisco.pkg.anyconnect.iseposture
sudo pkgutil --forget com.cisco.pkg.anyconnect.posture
The execution result of each command is correct like this:
Forgot package 'com.cisco.pkg.anyconnect.vpn' on '/'.

Step 3: Installationanyconnect
It should be installed now, but it is very likely that the application cannot be found through Mac search. If so, just keep going.

com.cisco.pkg.anyconnect.vpn
com.cisco.pkg.anyconnect.websecurity
com.cisco.pkg.anyconnect.nvm
com.cisco.pkg.anyconnect.fireamp
com.cisco.pkg.anyconnect.dart
com.cisco.pkg.anyconnect.iseposture
com.cisco.pkg.anyconnect.posture

Step 4: Uninstall

Open the application->cisco folder, where you can find the uninstaller. In fact, the correct way to uninstall is to double-click these uninstallers. Double-click the uninstaller and perform a correct uninstallation. At this time, there will be no environmental problems mentioned above on the Mac computer.